2007-07-13 01:52:57 · 20 answers · asked by ujiopinpin 1 in Cars & Transportation ➔ Aircraft
To the best of my knowledge, it's called a rotor or main rotor.
2007-07-13 01:58:16 · answer #1 · answered by jim d 2 · 5⤊ 0⤋
It's really sad so many people gave Mr D, thumbs down for the right answer.
It is a rotating wing as it is what gives the helicopter 'Lift'. It is called a rotor which is short for "Rotary Wing" and a helicopter is correctly identified as a 'Rotary Wing Aircraft' as oppose to 'Fixed Wing'. Individual wings are called 'Blades'.
When it is in rotation there are many unusual affects like the difference in airspeed between the advancing and retreating wing and the difference in speed of the inner portion and outer portion. The Rotor tip cannot exceed the speed of sound and since it's advancing through the air at it's speed of rotation plus the aircraft speed, that is possible. The complexity of control is probably why it's not called a propeller although the lift function of individual blade is the same.
The aerodynamics of the rotor in motion is seen as a disc or dish, producing lift and drag. The helicopter moves laterally by tilting the 'dish' head in the desired direction. Up and down is created by altering the pitch of the rotating wing. I think that's the collective, cause it makes them all do the same thing collectively.
The tail rotor compensates for the Main Rotor torque. When in the air, rotation is created between the Main Rotor and Aircraft body (fuselage). The tail rotor makes sure the main rotor turns and not the body. If two counter rotating heads are used there is no requirement for a tail rotor.
Hope this helps.
2007-07-16 23:59:29 · answer #2 · answered by Caretaker 7 · 0⤊ 0⤋
Main Rotor Blade(s)
2007-07-15 09:05:17 · answer #3 · answered by deitrich_02 1 · 0⤊ 0⤋
The one above the cabin that's horizontal is called the main rotor. The horizontal, or mostly horizontal, one on the aft end of the empenage is called the tail rotor.
You do not wish to be aboard the helicopter when either gives way.
2007-07-13 11:00:22 · answer #4 · answered by jettech 4 · 1⤊ 0⤋
Main Rotor
2007-07-13 09:51:11 · answer #5 · answered by walt554 5 · 1⤊ 1⤋
That would be the rotor. The smaller one that some helicopters have on the tail is called the tail rotor.
2007-07-13 09:38:54 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Main rotor. Rotor blade is the name of each individual blade.
2007-07-13 05:53:30 · answer #7 · answered by Anonymous · 3⤊ 0⤋
It is the Main Rotor System or Main Rotor Head.
The blades attach to the hub, which rests on the main rotor mast, which leads to the main-gear box (main transmission).
Here is a link to endless images of rotorheads: http://www.b-domke.de/AviationImages/Rotorhead.html
2007-07-13 04:11:50 · answer #8 · answered by mariner31 7 · 3⤊ 0⤋
The complete rotor is made up of individual rotor blades.
2007-07-13 01:59:10 · answer #9 · answered by Anonymous · 4⤊ 0⤋
Technically it's the "rotary wing" but we usually refer to it as the "main rotor", as opposed to the additional rotor on the tail which is called the "tail rotor".
2007-07-13 04:25:37 · answer #10 · answered by No More 7 · 5⤊ 0⤋